WO2020044948A1 - Dispositif d'inspection de soupape et procédé d'inspection de soupape - Google Patents

Dispositif d'inspection de soupape et procédé d'inspection de soupape Download PDF

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Publication number
WO2020044948A1
WO2020044948A1 PCT/JP2019/030433 JP2019030433W WO2020044948A1 WO 2020044948 A1 WO2020044948 A1 WO 2020044948A1 JP 2019030433 W JP2019030433 W JP 2019030433W WO 2020044948 A1 WO2020044948 A1 WO 2020044948A1
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WIPO (PCT)
Prior art keywords
valve
primary
hunting
control
pressure
Prior art date
Application number
PCT/JP2019/030433
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English (en)
Japanese (ja)
Inventor
篤志 廣枝
今地　昇平
可部　智昭
Original Assignee
ジヤトコ株式会社
日産自動車株式会社
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Application filed by ジヤトコ株式会社, 日産自動車株式会社 filed Critical ジヤトコ株式会社
Priority to JP2020540187A priority Critical patent/JP6975864B2/ja
Publication of WO2020044948A1 publication Critical patent/WO2020044948A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
    • F16H61/662—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/003—Machine valves

Definitions

  • the present invention relates to a valve inspection device and a valve inspection method suitable for use in a control valve of an automatic transmission in which a gear ratio is controlled by hydraulic pressure, in particular, a continuously variable transmission.
  • hydraulic pressure is used for controlling an automatic transmission mounted on a vehicle, and the supply of hydraulic pressure is controlled by a so-called control valve to control the automatic transmission.
  • a failure occurs in the hydraulic pressure supply system and the required hydraulic pressure cannot be supplied, not only can a predetermined shift be performed, but also, for example, in the case of a belt-type continuously variable transmission, thrust (force for gripping the belt by a pulley). Insufficiency causes belt slippage and accelerates deterioration of belts and pulleys.
  • control valve has been inspected to determine whether it is operating normally in the state of the control valve unit before being mounted on the automatic transmission. This is because, before mounting the automatic transmission equipped with the control valve on the vehicle, defective products that do not exhibit the predetermined performance are excluded or the performance of the control valve is prevented from being varied among products.
  • Patent Literature 1 discloses a method in which a certain load pressure is generated in oil passing through a solenoid valve, the pressure fluctuation value is measured, and a hydraulic pressure fluctuation of an appropriate magnitude is obtained. A method is described in which a control valve is determined to be acceptable and the other control valves are determined to be unacceptable.
  • the present invention has been made in view of such a problem, and provides a valve inspection device and a valve inspection method that can easily detect a failure of a control valve that causes hunting of a transmission ratio. Aim.
  • the present invention is a valve inspection device that is provided in a control device that performs feedback control of an output oil pressure from a control valve that supplies oil pressure to a continuously variable transmission mounted on a vehicle, and that detects a failure of the control valve.
  • a hunting detection unit that detects the occurrence of a hunting state in which the amplitude of the operation amount of the feedback control is equal to or more than a predetermined value, based on the operation amount of the feedback control, and the occurrence of the hunting state is detected by the hunting detection unit.
  • a valve failure determination unit that determines that the control valve has failed when the control valve has failed.
  • the hunting detection unit detects the hunting state when a phenomenon in which the amplitude of the operation amount of the feedback control becomes a predetermined value or more continues for a predetermined time or more.
  • the valve inspection device of the present invention further includes a precondition determination unit that determines whether the vehicle equipped with the continuously variable transmission is running at a constant speed, and the hunting detection unit is configured to determine whether the vehicle is running from the precondition determination unit. When it is determined that the vehicle is traveling at a constant speed, it is preferable to perform processing for detecting the occurrence of the hunting state.
  • valve inspection device of the present invention is mounted on the vehicle having a diesel engine as a drive source, and is provided in the control device of the continuously variable transmission having a torque converter with a lock-up clutch. Is preferred.
  • the continuously variable transmission includes an input-side primary pulley, an output-side secondary pulley, and a belt wound around these pulleys
  • the control device includes the primary pulley.
  • the primary pressure acting on the primary pulley is feedback-controlled so that the actual primary rotation speed that is the actual rotation speed of the primary pulley converges to the target primary rotation speed that is the target value of the rotation speed of the primary pulley. It is preferable that the valve failure determination unit determines that the primary pressure control valve that controls the primary pressure has failed when the occurrence of the hunting is detected by the hunting detection unit.
  • the present invention is a valve inspection method incorporated in a control device for feedback-controlling the output oil pressure from a control valve for supplying oil pressure to a continuously variable transmission mounted on a vehicle, and for detecting a failure of the control valve.
  • the detecting step detects a hunting state when a phenomenon in which the amplitude of the operation amount of the feedback control becomes a predetermined value or more continues for a predetermined time or more.
  • the valve inspection method of the present invention further includes a step of determining whether the vehicle equipped with the continuously variable transmission is traveling at a constant speed, and when it is determined that the vehicle is traveling at a constant speed, It is preferable to perform a step of detecting occurrence of a hunting state of the operation amount of the feedback control.
  • the continuously variable transmission includes an input-side primary pulley, an output-side secondary pulley, and a belt wound around these pulleys
  • the control device includes the primary pulley.
  • the primary pressure acting on the primary pulley is feedback-controlled so that the actual primary rotation speed that is the actual rotation speed of the primary pulley converges to the target primary rotation speed that is the target value of the rotation speed of the primary pulley.
  • the primary pressure control valve for controlling the primary pressure is out of order.
  • the present invention when occurrence of a hunting state in which the operation amount of the feedback control is equal to or more than a predetermined value is detected, it is possible to determine that the control valve is out of order. Since such a valve inspection process is performed by the control device of the continuously variable transmission mounted on the vehicle, a failure of the control valve can be easily found without using, for example, an external inspection device. Thus, for example, in a running test before shipping the vehicle, a defective control valve that causes hunting of the transmission ratio can be appropriately determined by a simple method.
  • FIG. 1 is a configuration diagram illustrating a main part of a continuously variable transmission including a valve inspection device according to an embodiment of the present invention and a control device thereof.
  • 5 is a flowchart illustrating a valve inspection method according to an embodiment of the present invention.
  • FIG. 1 is a configuration diagram illustrating a continuously variable transmission, which is an example of a vehicle automatic transmission including a valve inspection device according to the present embodiment, and a main part of a control device therefor.
  • a continuously variable transmission (CVT) 1 includes an input shaft 2 that is drivingly connected to an output shaft 10 a of an engine (internal combustion engine) 10 that is a driving source via a torque converter 11, and an input shaft 2.
  • An output shaft 3 driven and connected via a drive wheel 12, a reduction gear 13 and a differential mechanism 14, a primary pulley 4 connected to the input shaft 2, and a secondary pulley connected to the output shaft 3.
  • It includes a pulley 5 and an endless belt 6 wound around the primary pulley 4 and the secondary pulley 5.
  • the engine 10 is, for example, a diesel engine.
  • the torque converter 11 is a torque converter with a lock-up clutch 11LC. When lock-up clutch 11LC is in the lock-up state, engine 10 and CVT 1 are directly connected.
  • the primary pulley 4 has a fixed sheave 41, a movable sheave 42, and a primary oil chamber 43 for moving the movable sheave 42 in the axial direction.
  • the secondary pulley 5 has a fixed sheave 51, a movable sheave 52, and a secondary oil chamber 53 for moving the movable sheave 52 in the axial direction.
  • the continuously variable transmission 1 uses an oil pump 61 driven by the engine 10 and a hydraulic oil discharged from the oil pump 61 at a predetermined line pressure to supply hydraulic oil to the primary oil chamber 43 and the secondary oil chamber 53.
  • a pressure regulator valve (line pressure control valve) 62 for adjusting the pressure to PL
  • a primary pressure control valve (primary pressure control valve) 63 for adjusting the pressure to the primary pressure Ppri using the line pressure PL as an original pressure
  • a secondary pressure valve for adjusting the pressure to the primary pressure Ppri.
  • a secondary pressure control valve (secondary pressure control valve) 64 for adjusting the pressure to the pressure Psec.
  • Each of the valves 62, 63, 64 is a control valve operated by a solenoid, and a CVT ECU (CVT electronic control unit) 7 controls a current to each of the solenoids 62a, 63a, 64a, so that an output hydraulic pressure is adjusted.
  • CVT ECU CVT electronic control unit
  • the CVT ECU 7 detects the rotation speed (unit time rotation speed, primary pulley rotation speed) Npri of the primary pulley 4 and the rotation speed (unit time rotation speed, secondary pulley rotation speed) Nsec of the secondary pulley 5.
  • Various sensors such as a secondary rotation sensor 82 for detecting the pressure (primary pressure) Ppri of the primary oil chamber 43, a primary pressure sensor 83 for detecting the pressure (secondary pressure) Psec of the secondary oil chamber 53, and a secondary pressure sensor 84 for detecting the pressure (secondary pressure) Psec of the secondary oil chamber 53 are connected.
  • the sensor information and the switch information are input.
  • the CVT ECU 7 is connected to an engine ECU (engine electronic control unit) 8 so that information can be transmitted.
  • the continuously variable transmission 1 applies thrusts as low as possible to the pulleys 4 and 5 within a range in which no slippage occurs between the belt 6 and the pulleys 4 and 5, and when changing the speed ratio R, the primary pulley 4
  • the movable sheaves 42 and 52 are driven in the axial direction so that the target speed ratio R_t is achieved by applying a differential thrust between the movable sheaves and the secondary pulley 5.
  • These thrusts and differential thrusts are obtained by controlling the primary pressure Ppri and the secondary pressure Psec by the CVT ECU 7.
  • the CVT ECU 7 has a transmission control unit 7A having a line pressure control unit 71 for controlling the line pressure PL, a primary pressure control unit 72 for controlling the primary pressure Ppri, and a secondary pressure control unit 73 for controlling the secondary pressure Psec. And in addition, the CVT ECU 7 includes a speed ratio calculation unit 74 that calculates the actual speed ratio R_r from the primary pulley rotation speed Npri and the secondary pulley rotation speed Nsec.
  • the line pressure control unit 71 outputs a predetermined control command (line pressure instruction value) to the line pressure solenoid 62a.
  • the primary pressure control unit 72 outputs a control command (primary pressure instruction value Ppri_d) for obtaining a predetermined primary pressure target value Ppri_t to the primary hydraulic solenoid 63a.
  • Secondary pressure controller 73 outputs a control command (secondary pressure command value Psec_d) for obtaining predetermined secondary pressure target value Psec_t to secondary hydraulic solenoid 64a.
  • Secondary pressure control unit 73 calculates a torque capacity (required torque transmission capacity) to be transmitted by continuously variable transmission 1 based on output information from engine ECU 8, vehicle speed information from secondary rotation sensor 82, and the like.
  • a secondary pressure target value Psec_t corresponding to the required thrust is derived, and a secondary pressure instruction value Psec_d is set.
  • the secondary pressure command value Psec_d is set by adding a feedback correction amount based on the secondary actual pressure Psec to the secondary pressure target value Psec_t. Therefore, the secondary pressure Psec is controlled by feedback control (here, PID control) based on the secondary actual pressure Psec.
  • the primary pressure control unit 72 calculates the target speed ratio R_t calculated based on the output information from the engine ECU 8 and the vehicle speed information from the secondary rotation sensor 82, the actual speed ratio R_r calculated by the speed ratio calculation unit 74, and the secondary pressure instruction value.
  • a primary pressure target value Ppri_t is set from (secondary command pressure) Psec_d, and a primary pressure command value (primary command pressure) Ppri_d is set from the primary pressure target value Ppri_t and primary actual pressure Ppri.
  • the relationship between the secondary pressure instruction value Psec_d and the secondary pressure instruction value Psec_d is determined by feedback control (here, PID control) based on the deviation (R_t ⁇ R_r) between the target speed ratio R_t and the actual speed ratio R_r.
  • PID control feedback control
  • the primary pressure target value Ppri_t corresponding to the thrust is given, and the primary pressure instruction value Ppri_d is set while considering the primary actual pressure Ppri.
  • the line pressure control unit 71 Based on the secondary pressure command value Psec_d and the primary pressure command value Ppri_d, the line pressure control unit 71 sets the secondary pressure command value Psec_d and the primary pressure command value such that the secondary pressure command value Psec_d and the primary pressure command value Ppri_d can be achieved.
  • a line pressure command value PL_d higher by a margin (differential pressure ⁇ P0) than the larger one of Ppri_d is set.
  • the target primary pulley rotation speed is set based on the vehicle speed and the accelerator opening, and the actual primary pulley rotation speed Npri is determined.
  • control for changing the gear ratio is performed, and thereby a predetermined gear shift (gear shift operation) is performed.
  • the responsiveness of the primary actual pressure Ppri to the primary pressure target value Ppri_t is deteriorated.
  • the followability of the actual primary pulley rotation speed Npri to the pulley rotation speed is deteriorated.
  • the primary pressure control valve 63 When hunting of the transmission ratio occurs due to the poor pressure adjustment of the primary pressure control valve 63, the primary pressure control valve 63 is considered to be in a failure state, and the valve is re-examined, repaired, replaced, or the like. You need to take action.
  • the CVT ECU 7 is provided with a valve inspection unit 75 for inspecting the control valve, and the valve inspection unit 75 can detect the failure of the control valve by detecting the occurrence of the hunting state of the operation amount of the feedback control.
  • the following description focuses on the primary pressure control valve 63 as a valve to be inspected.
  • feedback control refers to feedback control by the shift control unit 7A (specifically, the primary pressure control unit 72), that is, the primary pressure so that the actual primary pulley rotation speed Npri converges to the target primary pulley rotation speed. Is to perform feedback control.
  • the valve inspection unit 75 includes a precondition determination unit 76, a hunting detection unit 77, and a valve failure determination unit 78.
  • the precondition determination unit 76 determines whether to permit the hunting detection unit 77 to execute the detection process based on a predetermined precondition.
  • a predetermined precondition for example, the following five preconditions (a) to (e) are set.
  • A) There is no change in the accelerator pedal operation (for example, the difference between the current throttle opening and the immediately preceding (for example, 0.1 second before) throttle opening is equal to or less than a predetermined angle (for example, 1.0 degree)). And the accelerator is on (or the conventionally known idle switch is off)
  • B) The position of the shift lever is in the D range.
  • C) The vehicle speed is 15 km / h or more.
  • E) The lock-up clutch 11LC is on.
  • preconditions (a) to (e) for judging that the vehicle is traveling at a constant speed equal to or higher than a certain speed.
  • the precondition determination unit 76 regards that the precondition is satisfied, and permits the hunting detection unit 77 described below to execute a detection process.
  • the hunting detection unit 77 detects the occurrence of the hunting state of the operation amount of the feedback control based on the following condition (f). That is, when the condition (f) is satisfied, the hunting detection unit 77 determines that hunting of the operation amount of the feedback control has occurred.
  • (F) The amplitude of the manipulated variable of the feedback control after the filter processing is equal to or greater than a predetermined value, and the state continues for a predetermined time. Specifically, the hunting detection unit 77 performs the processing for every predetermined data acquisition cycle.
  • the operation amount of the feedback control is acquired in time series, and the acquired operation amount is subjected to filter processing (for example, band-pass filter processing), so that the operation amount in the frequency band corresponding to the hunting cycle is obtained. Extract the periodic vibration.
  • the hunting detection unit 77 determines that the amplitude value (amplitude value of the periodic vibration) of the manipulated variable of the feedback control after the filter processing is equal to or more than a predetermined value (for example, 2000 Nm) and that the state is maintained for a predetermined time (for example, If the continuation is continued, it is determined that the hunting state of the operation amount of the feedback control has occurred.
  • a predetermined value for example, 2000 Nm
  • the hunting detection unit 77 determines that the hunting is performed when at least one of the following two clear conditions (g) and (h) is satisfied.
  • the occurrence detection processing is not performed.
  • G The amount of change per hour (for example, 10 milliseconds) of the target primary rotational speed is equal to or more than a predetermined value (for example, 100 rpm).
  • H The amplitude of the operation amount of the feedback control after the filter processing is a predetermined value (for example, 500 Nm).
  • condition (g) If the condition (g) is satisfied and the condition continues for a predetermined time (for example, 2 seconds), the driver of the vehicle intends to shift (ie, accelerate or decelerate) ( It is considered that the torque variation is required), and the hunting detection unit 77 does not perform the detection processing.
  • the condition (h) that is, when the operation amount of the feedback control is periodically oscillating but the amplitude is small, it can be determined that hunting has not occurred.
  • the valve failure determination unit 78 determines that the primary pressure control valve 63 is in a failure state when hunting is detected by the hunting detection unit 77.
  • the valve failure determination section 78 may output a failure detection signal.
  • the failure detection signal can be used, for example, to indicate that the primary pressure control valve 63 has failed on a display (not shown) or the like (notification of failure).
  • the CVT ECU 7 is configured to include a CPU (not shown), a storage device including a ROM and a RAM, an input interface, an output interface, and a bus connecting these components to each other.
  • the storage device stores various control programs and various data necessary for executing the control programs. These control programs include a valve inspection program for causing the CVT ECU 7 to execute the operation of the valve inspection unit 75.
  • the CVT ECU 7 functions as a valve inspection device by executing this valve inspection program by the CPU.
  • valve inspection process is performed in a state where the vehicle equipped with the CVT 1 in FIG. 1 is running.
  • the running of the vehicle is a running test performed before shipping the vehicle.
  • the CVT ECU 7 executes the valve inspection program, and repeats the process shown in FIG. 2 at predetermined intervals.
  • the CVT ECU 7 determines whether or not all of the five prerequisites (a) to (e) are satisfied by the prerequisite determination unit 76. In a state in which at least one of the five preconditions (a) to (e) is not satisfied, step S1 is branched to No, and the processing after step S2 (determination by the hunting detection unit 77) is not performed.
  • step S1 When all of the five preconditions (a) to (e) are satisfied (Yes in step S1), the start of the determination by the hunting detection unit 77 is permitted.
  • the CVT ECU 7 starts the determination by the hunting detection unit 77.
  • the CVT ECU 7 performs the processing of step S3 and subsequent steps (determination by the hunting detection unit 77). Do not do.
  • the CVT ECU 7 determines that the hunting state of the operation amount of the feedback control has occurred. In this case, the CVT ECU 7 determines that the primary pressure control valve 63 is in a failure state by the valve failure determination unit 78 (Step S4). When the failure of the primary pressure control valve 63 is determined, the CVT ECU 7 may output (notify) that the primary pressure control valve 63 has failed, for example, by displaying on a display or outputting sound.
  • step S3 when the condition (f) is not satisfied (No in step S3), for example, when the operation amount of the feedback control does not periodically oscillate, the CVT ECU 7 determines that the hunting state of the operation amount of the feedback control has not occurred. And terminate the process.
  • the CVT TEC 7 since the CVT TEC 7 includes the valve inspection unit 75, it is possible to determine the failure of the primary pressure control valve 63 by detecting the occurrence of the hunting state of the operation amount of the feedback control. Becomes By performing the valve inspection process by the control device (CVT ECU 7) of the CVT 1, it is possible to easily find the failure of the primary pressure control valve 63 in a vehicle mounted state without using an external inspection device, for example. . Thus, for example, in a running test before shipment of the vehicle, a defective control valve that causes hunting of the transmission ratio can be appropriately determined by a simple method.
  • the valve inspection unit 75 of the present embodiment is suitable for a vehicle including a diesel engine.
  • the hunting of the transmission ratio is not limited to the failure of the primary pressure control valve 63, but also occurs due to, for example, a failure of the pressure regulator valve 62 or an abnormality of the oil pump.
  • the failure of the primary pressure control valve 63 is determined based on the occurrence of the hunting state of the operation amount of the feedback control for causing the actual primary pulley rotation speed to converge to the target primary pulley rotation speed.
  • erroneous detection of a failure of the pressure regulator valve 62 can be suppressed, and the accuracy of failure detection of the primary pressure control valve 63 can be improved.
  • the primary pressure control valve 63 has been described as a target of the valve inspection.
  • the target of the valve inspection may be the secondary pressure control valve 64 or a pressure regulator valve. 62.
  • the valve inspection process is performed during the vehicle running test.
  • the vehicle running test may be a running test performed on a chassis dynamo.
  • the numerical values illustrated as the preconditions of the precondition determination unit 76, the determination conditions of the hunting detection unit 77, or the clear conditions are merely examples, and are not limited thereto.
  • a boundary of the condition may be expressed as “greater than a predetermined value” or “smaller than a predetermined value”.
  • the detection processing by the valve inspection unit 75 is not limited to determining all items exemplified as conditions in the present embodiment, and may be configured to perform determination or detection by appropriately combining the items.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Transmission Device (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

La présente invention concerne une CVTECU (7) d'une transmission à variation continue (1) montée dans un véhicule, ladite CVTECU étant pourvue d'une unité d'inspection de soupape (75) pour inspecter une soupape de commande (63) dont la transmission à variation continue (1) est équipée. La CVTECU (7) effectue une commande à rétroaction de pression hydraulique dans la soupape de commande (63) afin de commander le rapport de transmission de la transmission à variation continue (1), et l'unité d'inspection de soupape (75) est pourvue : d'une unité de détection de pompage (77) qui, sur la base d'une variable manipulée de la commande à rétroaction, détecte une occurrence d'un état de pompage dans lequel la variable manipulée de la commande à rétroaction adopte ou dépasse une valeur prescrite ; et une unité de détermination de dysfonctionnement de soupape (78) qui détermine que la soupape de commande (63) a mal fonctionné si une survenue de l'état de pompage est détectée.
PCT/JP2019/030433 2018-08-30 2019-08-02 Dispositif d'inspection de soupape et procédé d'inspection de soupape WO2020044948A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020540187A JP6975864B2 (ja) 2018-08-30 2019-08-02 バルブ検査装置及びバルブ検査方法

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JP2018162071 2018-08-30
JP2018-162071 2018-08-30

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN111272416A (zh) * 2020-04-08 2020-06-12 缙云普层泵阀科技有限公司 一种二位四通阀门压力检测设备
CN113203561A (zh) * 2021-05-11 2021-08-03 徐州阿卡控制阀门有限公司 一种控制阀在线故障检测用数据采集器
CN116973094A (zh) * 2023-08-01 2023-10-31 武汉万曦智能科技有限公司 安全阀自动测试控制系统

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WO2013145967A1 (fr) * 2012-03-28 2013-10-03 ジヤトコ株式会社 Transmission à variation continue et procédé de commande de pression hydraulique
WO2014042032A1 (fr) * 2012-09-13 2014-03-20 ジヤトコ株式会社 Procédé de commande et dispositif de commande de transmission automatique
US20150112639A1 (en) * 2013-10-22 2015-04-23 Yokogawa Electric Corporation Method and apparatus for performing diagnostics on a conventional control valve
JP2015114942A (ja) * 2013-12-13 2015-06-22 アズビル株式会社 バルブ異常検出装置および方法
JP2016183762A (ja) * 2015-03-26 2016-10-20 ジヤトコ株式会社 車両用油圧制御装置

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Publication number Priority date Publication date Assignee Title
WO2013145967A1 (fr) * 2012-03-28 2013-10-03 ジヤトコ株式会社 Transmission à variation continue et procédé de commande de pression hydraulique
WO2014042032A1 (fr) * 2012-09-13 2014-03-20 ジヤトコ株式会社 Procédé de commande et dispositif de commande de transmission automatique
US20150112639A1 (en) * 2013-10-22 2015-04-23 Yokogawa Electric Corporation Method and apparatus for performing diagnostics on a conventional control valve
JP2015114942A (ja) * 2013-12-13 2015-06-22 アズビル株式会社 バルブ異常検出装置および方法
JP2016183762A (ja) * 2015-03-26 2016-10-20 ジヤトコ株式会社 車両用油圧制御装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111272416A (zh) * 2020-04-08 2020-06-12 缙云普层泵阀科技有限公司 一种二位四通阀门压力检测设备
CN113203561A (zh) * 2021-05-11 2021-08-03 徐州阿卡控制阀门有限公司 一种控制阀在线故障检测用数据采集器
CN113203561B (zh) * 2021-05-11 2023-01-06 徐州阿卡控制阀门有限公司 一种控制阀在线故障检测用数据采集器
CN116973094A (zh) * 2023-08-01 2023-10-31 武汉万曦智能科技有限公司 安全阀自动测试控制系统

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